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CVE-2026-20160 is a critical vulnerability in Cisco Smart Software Manager On-Prem caused by unintended exposure of an internal service. A remote unauthenticated attacker can send a crafted request to the exposed service API to execute arbitrary commands on the underlying operating system with root-level privileges. Cisco SSM On-Prem releases from 9-202502 through 9-202510 are affected; releases prior to 9-202502 are not affected.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
34 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An unauthenticated remote code execution vulnerability affecting Cisco SSM On-Prem.
A critical remote command execution vulnerability in Cisco Smart Software Manager On-Prem caused by unintended exposure of an internal service, allowing an unauthenticated attacker to gain root-level privileges.
A critical remote code execution vulnerability in Cisco Smart Software Manager On-Prem caused by exposure of an internal service, allowing arbitrary command execution as root via crafted API requests.
A critical remote command execution vulnerability in Cisco SSM On-Prem that allows unauthenticated attackers to execute commands on the host operating system with root privileges via a crafted API request.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.